Electrosmog has received a great deal of attention in the press. This is more seriously known as EMF – or electromagnetic fieds, not to be confused with electromotive force. It has a great many sources, including computers, cellphones, microwave ovens, fluorescent lightning, electrical power lines, and industrial plants. It may also cover a wide frequency range, from extremely low frequency all the way up to microwaves (thousands of MHz) and even higher. The Electrosmog Sniffer described here will detect EMF from a few Hertz up to about 7MHz, and has the potential to do so up to about 50MHz. This means that it is not as capable as some commercial units, it will be far more usefule than a simple electrician’s milligauss meter. Here is the schematic diagram :

electrosmog sniffer circuit schematic diagram

The gauss (a milligauss is one-thousandth of a gauss) is a unit of measurement of magnetic field strength. A milligauss meter (which is what Electrosmog sniffer is) measures the strength of magnetic fields. Inside a milligauss meter there is a coil of thin wire, typically with hundreds of turns (L1 in this design). As a changing magnetic field radiates through the coil, it induces a current which is amplified by the circuitry inside the milligauss meter. [Source : Everyday Practical Electronic]

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